English

Using semidualizing complexes to detect Gorenstein rings

Commutative Algebra 2015-04-10 v3

Abstract

A result of Foxby states that if there exists a complex with finite depth, finite flat dimension, and finite injective dimension over a local ring RR, then RR is Gorenstein. In this paper we investigate some homological dimensions involving a semidualizing complex and improve on Foxby's result by answering a question of Takahashi and White. In particular, we prove for a semidualizing complex CC, if there exists a complex with finite depth, finite FC\mathcal{F}_C-projective dimension, and finite IC\mathcal{I}_C-injective dimension over a local ring RR, then RR is Gorenstein.

Keywords

Cite

@article{arxiv.1412.7125,
  title  = {Using semidualizing complexes to detect Gorenstein rings},
  author = {Sean Sather-Wagstaff and Jonathan Totushek},
  journal= {arXiv preprint arXiv:1412.7125},
  year   = {2015}
}

Comments

6 pages, comments welcome; v.2 added reference; v.3 minor changes from referee

R2 v1 2026-06-22T07:41:16.558Z